Time damper mechanism for furnaces.



Patented Sept. 12, I899.

I. HAIN.

TIME DAMPER MECHANISM FOR FURNACES.

(Application filed June 7, 1899.)

(No Model.)

% E 'wuem foz 2am V UNITED STATES PATENT OFFICE.

MILTON HAIN, OF WERNERSVILLE, PENNSYLVANIA.

TIME DAMPER MECHANISM FOR FURNACES.

SPECIFICATION forming part of Letters Patent No. 632,939,datedSeptember12, 1899.

Application filed June '7, 1899.

tion with the accompanying drawing, which shows my improved apparatusapplied to an ordinary form of heater.

A represents the body of a heater, B the fire-door, and G the ash-pitdoor, the latter being provided with an arm 0 which is connected byacord or chain c to one end of an ordinary lever c, which is pivoted to afixed point 0 and the opposite end of which is provided with a weight a,tending to normally open the door 0.

My apparatus comprises a cord or chain .g, one end of which is connectedto the fire-door B and the other to a weight h, which is adapted tonormally close said door, the chain 9 being passed over guide-pulleys fand c, mountedin a frame d, fixed to the front of the furnace, as shown.This weight it also pulls upon a branch cord or chain g, which passesover suitably-located pulleys i 'i and connects at its end 9 with apivoted lever j, the free end of which is engaged when in the setposition indicated in the drawing by a trigger-pin Serial No. 719,727.(No model.)

Another branch 9 of the weighted chain or cord connects with one end ofthe weighted lever c. A spring q is preferably employed in connectionwith this lever c, as shown, to prevent a jarring stop of themovingparts.

In fixing the fire for'the night, for instance, the lever j is locked bythe trigger-pin 70, as indicated, thus raising the weighted end of theash-pit door 0 may be closed and the fire door B opened. The clockmechanism is then ger-pin kv from its engagement with the 'lever j at acertain time, the result of which release is that the weight it willdrop, thus directly closing the door B and slacking the chain or cord gso as to permit the weighted end of the lever c to drop, thereby openingthe ashpit doo'r, thus applying full draft to the fire. What I claim isThe combination with a stove or furnace of the weighted lever 0connected with the ashpit ,door, 'the weighted main cord g passing overaseries of guide-pulleys and having one branch 9 connected with theweighted end with thevfire-door, a spring q having a cord connection tosaid weighted lever and adapted to control the fall of the connectedashpit door, a trigger connected to the opposite. end of said main cord,and a clock mechanism arranged to release .said trigger, allsubstantially as set forth.

Signed by me at Reading, Pennsylvania, this 26th day of May 1899.

MILTON I. IIAIN. Witnesses:

D. M. STEWART, Hanna Y. You.

the lever c and slacking the chain g, so thatv set so as toautomatically withdraw the trig-- of said lever and another branch 9connected 6 3

